Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

I am having the same slowness, irratic, unstable issues with Thunderbird that I had 9 months ago. T-bird worked fine last sunday but now is unstable,

  • 1 odgovor
  • 2 ima ovaj problem
  • 16 views
  • Posljednji odgovor poslao sfhowes

more options

Slow to download email, slow to respond or open email, slow or unable to delete email, "A script on this page may be busy....error message when trying to delete an email. I had similar problems before (9 mo ago) but they went away after dealing with McAfee. Thunderbird worked fine last sunday but when I tried to use it today I now have all these problems.

Slow to download email, slow to respond or open email, slow or unable to delete email, "A script on this page may be busy....error message when trying to delete an email. I had similar problems before (9 mo ago) but they went away after dealing with McAfee. Thunderbird worked fine last sunday but when I tried to use it today I now have all these problems.

All Replies (1)

more options

McAfee has been causing problems again this week, so the remedy remains the same:

https://wiki.mozilla.org/Thunderbird:Testing:Antivirus_Related_Performance_Issues#McAfee